427 15th Street
427 15th Street, between Eighth Avenue and Prospect Park West · Park Slope
Park Slope, Brooklyn
BBL 3011030066 · BIN 3026627
- Year built
- 1909
- Type
- Cooperative
- Amenities
- Common laundry, bicycle storage and basement storage
- Landmark status
- Not an individual landmark; in the Park Slope Historic District Extension
- NYC Landmarks Preservation Commission records, updated February 2026
Every recorded sale at this building, 2004–2024
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- Recent range
- $875K – $875K
- Listing discount
- 0.0%
- Recorded transfers
- 25
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427 15th Street is a sixteen-apartment cooperative on the last residential block of 15th Street before Prospect Park West. Its four-story walk-up form belongs to the early apartment-house fabric of southern Park Slope. The building became part of the Park Slope Historic District Extension when that district was designated in 2012.
The apartment inventory includes two-bedroom, one-bath homes. Shared laundry and storage are downstairs, and access to the upper floors is by stairs. The block places the building near the southwestern edge of Prospect Park and the subway entrance at Prospect Park West and 14th Street.
Architecture and unit composition
The four-story structure has a compact, multi-apartment floor plate. LPC's Park Slope Historic District Extension designation report dates the building to circa 1909, designed by Thomas Bennett for Max Kurzrok. The building's exterior is protected as part of the historic district.
Two-bedroom plans use a single bathroom, and apartments on different levels have traded over many years. Upper-floor homes require the climb through the common stair. The building has no elevator, a practical distinction for buyers comparing otherwise similar prewar apartments.
Building operations
The cooperative provides a laundry room, bicycle storage and dedicated basement storage. Those facilities concentrate the common services below the residences. The building has sixteen apartments sharing responsibility for its roof, masonry and common circulation areas.
Landmark designation brings exterior alterations within LPC's review. Work to windows and other visible features can therefore require an LPC permit in addition to any building permit. The protected exterior is part of the property being maintained by the cooperative, including when work originates with an individual shareholder.
Policy framework
Minimum down payment: Confirm the current minimum down payment with the managing agent. Pets: Permitted — confirm with the managing agent.
Application and transaction fees
Fees below are from building management's published schedule, as of September 2026. They are shown as published, item by item; no total is added because the total depends on the transaction. Deposits are listed apart from nonrefundable charges.
Purchase
3 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Buyer | When With the application | Amount $750 | Refundable Non-refundable |
| Expedited Application FeeConditional | Paid by Buyer | When With the application | Amount $500 if applicable | Refundable Not stated |
| Screening FeePer applicant | Paid by Buyer | When With the application | Amount $125 per applicant 18+ | Refundable Not stated |
Sublet
3 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Subtenant | When With the application | Amount $650 | Refundable Non-refundable |
| Expedited Application FeeConditional | Paid by Subtenant | When With the application | Amount $500 if applicable | Refundable Not stated |
| Screening FeePer applicant | Paid by Subtenant | When With the application | Amount $125 per applicant 18+ | Refundable Not stated |
Management updates its schedule without a public filing. The date is when management last updated the page, not when a rule changed. Confirm the current schedule with management before you apply.
Considering an apartment here? Send Corey the listing to discuss the building's costs and purchase requirements.
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Building staffing and amenities
- Elevator
- NoSource: NYC Department of City Planning records (PLUTO)
- Amenities noted
- Bike storage, storage, laundry roomSource: The Roebling Team's building profile
Staffing and amenities as our building profile and recent listing records describe them. A feature not listed is not confirmed absent. Outdoor space, parking and some facilities can belong to particular apartments or to a separate owner; confirm access for the specific apartment.
Local Law 97
This building is below the 25,000 sq ft threshold at which LL97 limits apply to a building on its own. It is still covered if it shares a tax lot or condominium board with buildings totaling over 50,000 sq ft; confirm on DOB’s covered-buildings list.
See full Local Law 97 analysis →Recent sales
Recent transfers at this building, from The Roebling Research Library. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | vs. Ask |
|---|---|---|---|---|
| Dec 19, 2024 | 2B | 2 BR · 1 BA | $875,000 | +0.0% |
| Jun 28, 2022 | 4B | 2 BR · 1 BA | $953,350 | +15.0% |
| Sep 23, 2020 | 4A | 2 BR · 1 BA | $757,000 | +0.0% |
| Feb 26, 2020 | 3C | 2 BR · 1 BA | $695,000 | -0.6% |
| Apr 25, 2019 | 4C | 2 BR · 1 BA | $790,000 | +1.9% |
| Dec 11, 2018 | 3C | 2 BR · 1 BA | $699,000 | +0.0% |
| Sep 12, 2017 | 3A | 2 BR | $685,000 | +0.0% |
| Jul 18, 2017 | 4B | 2 BR | $759,000 | +12.4% |
Market read. Median listing discount 0.0% from the last ask.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01103-0066). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price.
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Buying here? Co-op closing costs typically run 2 to 3% of the price. See NYC co-op and condo closing costs, line by line.
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Comparable buildings
- 14 Prospect Park Southwest: A prewar cooperative spread across three walk-up buildings close to the park.
- 459 12th Street: A small cooperative created from a former garage, offering a different original building type at walk-up scale.
- 443 12th Street: An Ansonia warehouse conversion with cooperative ownership and loft character.
- 86 Prospect Park West: A cooperative occupying two four-story prewar buildings with neoclassical façades.
- 75 Prospect Park West: A prewar elevator cooperative for buyers comparing stair access with a larger shared building.
More Park Slope buildings
- 422 Second Street — 1920 co-op
- 423 15th Street — 1909
- 426 2nd Street, 426 2nd Street · Park Slope — 1920 condominium
- 432 Tenth Street — condominium
- 433 3rd Street — 1920 co-op
- 44 Garfield Place — condominium
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Park Slope.
The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
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646.939.7375 · c.cohen@compass.com